Beatport key’s
A# Major is A-Flat Major (4B) on the camelot wheel right?
no. a sharp has the same notes as b flat (B♭ ) so 6B
there’s a semitone difference between A and A# (A sharp).. sounds awful together..
why cant beatport just put b flat then
since when does beatport put keys into their tags?
Because anyone who has a clue what a key signature is knows that A# and Bb are the same note.
Welcome to one of the dozens of reasons why the camelot wheel is f***ing stupid.
Camelot Meet 9inch mixing block
http://www.9inchremix.com/modules/HelpFAQ/9inchMixingBlock.pdf
that, sir, is where its at.
cheers mate 
It took me some time to find it but its well worth it